The Dynamical Dipole Mode in Fusion Reactions with Exotic Nuclear Beams

TL;DR

This paper investigates the prompt dipole radiation in fusion reactions with exotic beams, showing its sensitivity to symmetry energy and potential as a probe for fusion dynamics and excitation mechanisms.

Contribution

It provides new insights into the properties of prompt dipole radiation and its dependence on nuclear symmetry energy in fusion reactions with exotic beams.

Findings

Gamma yield depends on symmetry energy density dependence.

Angular distribution reveals details of excitation mechanisms.

Prompt dipole radiation can probe fusion entrance channel dynamics.

Abstract

We report the properties of the prompt dipole radiation, produced via a collective bremsstrahlung mechanism, in fusion reactions with exotic beams. We show that the gamma yield is sensitive to the density dependence of the symmetry energy below/around saturation. Moreover we find that the angular distribution of the emitted photons from such fast collective mode can represent a sensitive probe of its excitation mechanism and of fusion dynamics in the entrance channel.